Water-tube boiler.



No. 702,570. Patented .lune l7, I902. o. n. URVIS.

WATER TUBE BOILER.

(Application filed Mar. 29, 1901.- Renewed Feb. 26, 1902.) I

3 Sheets-Sheet I.

(No Model.)

WITNESSES: Q 1 INVENTOR No. 702,670. Patented lune I7 1902. 0

' 0. u. OBVIS. I WATER TUBE BOILER. (Applicatiox filed Mar. 29, 1901. Re newed Feb. 26, 1902.)

3 Sheets- 8min 2.

(No Model.)

' INVENTOR:- W

M ATTORNEY No. 702,620. Patented lune l7, I902.

0. n.v onvls.

WATER TUBE BOILER.

- Application filed Marl 29, 1901. Renewed Feb. 26, 1902.)

' (No Model a Sheets.8heet 3.

WITNESSES: INVENTORI ZQM ME Q fi/wgam; I AITTORNEYA r UNITED STATES PATENT OFF CE.

OREL D. ORVIS, on NEW YORK, N. Y.

WATER-TUBE BOILER.

SPECIFICATION forming part of Letters Patent No. 702,670, dated June 17, 1902.

Application filed March 29,1901. Renewed February 26, 1902. Serial No. 95,680. (No model.)

T at whom it may concern:

Be it known that I, OREL D. ORVIS, a citizen of the United States of America, residing in the borough of Manhattan, New York city, in the county of New York and State of New York, have'invented certain new and useful or superheated steam.

With these objects in view my invention consists, essentially, in a boiler having two vertical drums placed at opposite ends of the furnace and each having a waterand a steam space, horizontal headers e'xtonding'laterall'y from the said drums and connected by longitudinal tubes, part of whichform water-tubes and part form drying or superheating tubes, combined with a furnace having grates adapt ed to be fired from opposite sides of the front drum and deflecting walls over the first header extending from the walls of the furnace into proximity 'tothe drums for directing the products of combustion inwardly between the drums. Y

My invention furthermore consists in connectingthe upright water-drums by means of horizontal tubes arranged in vertical tier,

combined with deflecting-plates arranged above the first deflecting-walls and adapted to redirect the products of combustion laterally against the water-tubes connecting the horizontal headers.

The nature of my invention will best be understood when described in connection with the accompanying drawings, in which-- Figure 1 represents a'longitudinal sectional elevation taken on the line 1 1, Fig. 2 Fig. 2 is a transverse section'taken on the line 2 2, Fig. 1.. Fig. 3 is a longitudinal section taken on the line 3 3, Fig. 2.

Similar letters and numerals of reference designate corresponding parts throughout the several views of the drawings.

Referring to the drawings, the letters A designate the side walls of a furnace. B is the front wall, provided with suitabl charging-openings b on opposite sides of the center of the furnace and with ash-pit open-- ings c. f A,

O is the rear wall, D thesupporting-walls, and E'the grates extending from'the front wallB to the supporting-walls D and'supported by the two walls in the usual manner.

F is a central longitudinal wall'extending from the'front wall 13 to the rear wall 0 and dividing the furnace into twoparts on a line with the grate E. I v v The grates E may extend the entire length of the furnace or throughout onlya portion of the same. If the grates extend only 7 through part of the length of the furnace and so necessitate the use of a supporting-wall D, I prefer to close the space between the wall and'the rear wall of thefurnace by-a cover,

as D, so as to prevent the fuel from falling back of the wall D. v

'In the front wall of the furnace is supported a vertical drum G, and in the rear wall is supported a verticaldrum H, of greater height than the drum G, and to each of s'aiddrums are connected by nipplesl or other means suitable headers I, extending parallel with the front oftheboiler and connected by longitudinal tubes J. These headers ',extend from the nipples I to near theside walls A of the boiler, j ustsuflicient space being left to permit of expansion of the 'headers underheat without crowding the walls. The head' ers Ia're-placed close together and each coners and connecting-tubes mayibe'used for the purpose, according to the degree of superheating required. The lower headers I are preferably connected by one set of tubes J horizontally arranged, and above the same I place deflecting-walls L, extending inwardly from the side walls A to near the drums G and H. The drums G and H are connected by a vertical series of horizontal tubes M, of which one or more of the upper tubes M may form superheating-tubes, similarly to the tubes J. Above the horizontal deflectingwalls L are arranged deflectin g-walls N, which extend in curved lines from the tubes M to the first set of tubes J, adjacent to the vertical drums G and II, and are supported by the two sets of tubes M and J. Between the corresponding series of tubes at the end of the arched deflecting-plates N are arranged defleeting-plates 0, which extend horizontally for a short distance. The grates E preferably extend nearly throughout the length of the furnace, which is made correspondingly short.

R R are the blow-off pipes for the drums.

S is the feed-pipe to one of the drums, and T the outlet for steam, and U is the uptake or chimney for the escaping gases connected with the top of the furnace. The products of combustion from the grates E pass in the directions of arrows 11 upwardly against the tubes J above which are located the deflecting-walls L. These deflecting-walls carry the products of combustion inwardly toward the tubes M, from whence they again are direct ed outwardly through the series of tubes J by the deflecting-plates N and O, and finally said products are conducted to the uptake U, leading to the chimney by the wall or roof V, located above the upper series of tubes J. The course of the products of combustion is indicated by arrows 11 in the several figures of the drawings. By tracing these arrows it will be seen that the products of combustion from the grates E meet at the center of the furnacethat is, in the central space terminated atits top by the deflectingplates N-and this space forms a combustionchamber where the gases mingle and are broken up in View of the meeting of opposing currents. This combustion'ehamber I have designated by the letter W. Above said deflecting-walls N the gases again meet at the center of the boiler and are finally conducted away through the uptake.

In order to insure a perfect water circulation, I place in the rear water-drum II a partition Y, which is located at about the center of the drum and provided with a transverse opening 2. The circulation of water takes place as indicated by arrows 12-thatis, from the lower part of the drum II through the set of tubes M below the arches N to the front drum G, from thence through the tubes M above the arches N back to the drum I-I above the partition Y. Circulation also takes place downwardly from the upper part of the drum H in View of the orifice 2 in the partition Y. Circulation furthermore takes place laterally through the headers I and tubes J, as indicated by arrows 12.

While I have herein shown the tubes connecting the headers I and those connecting that the steam generated in the several tubes separates from the water as soon as it is delivered to the drum G and passes upwardly into the steam-space of said drum and from thence through the drying or superheating tubes connecting said drum with the steamspaee of the drum II. In View of this arrangement only water enters the upper tubes, and steam is again generated during the passage of the water through the up per series of tubes on its way to the drum H. Since the steam can rapidly disengage from the water in the body of the boilerthat is to say, during the transit of the water through the boilera large superficial surface of separation is not essential, and consequently the drums need not be made of large diameter.

That I claim as new is- 1. A water-tube boiler comprising two vertical drums placed at opposite ends of the furnace and each having a water and a steam space, horizontal headers extending laterally from the said drums and connected by longitudinaltubes, part of which form water-tubes and part form drying or superheating tubes, combined with a furnace having grates adapted to be fired from opposite sides of the front drum, and deflecting-Walls over the first header extending transversely from the longitudinal walls of the furnace into proximity to the drums for directing the products of combustion inwardly between the drums, substantially as described.

2. A water-tube boiler comprising two vertical drums placed at opposite ends of the furnace and each having a water and a steam space, horizontal headers extending laterally from the said drums and connected by longitudinal tubes, part of which form water-tubes and part form drying or super-heating tubes, longitudinal tubes directly connecting the two vertical drums, combined with a furnace having grates adapted to be fired from opposite sides of the front drum, and deflectingwalls over the first header extending from the walls of the furnace into proximity to the drums for directing the products of combustion inwardly between the drums, substantially as described.

3. A water-tube boiler comprising two vertical drums placed at opposite ends of the furnace and each having a water and a steam space, horizontal headers extending laterally from the said drums and connected by longitudinal tubes, part of which form water-tubes and part form drying or super-heating tubes, longitudinal tubes directly connecting the two vertical drums, combined with a furnace having grates adapted to be fired from opposite sides of the front drum, deflecting-walls extending from the walls of the furnace into proximity to the drums for directing the products of combustion inwardly between the drums, and horizontal deflecting-plates located above the deflecting-walls for directing the products of combustion outwardly, sub stantially as described.

' 4:. A water-tube boiler comprisingtwo vertical drums placed at opposite ends of the f urnace and each having a water and a'steam space, horizontal headers extending laterally from the said drums and connected by longi tudinal tubes, part of which form water-tubes and part form drying or superheating tubes, a combustion-chamber formed between the adjacent ends of the headers and containing longitudinal tubes connecting the two vertical drums, deflecting-walls arranged between the headers and extending from the walls of the furnace to the combustion-chamber, and deflecting plates extending from the conmeeting-tubes of the drums to the connecting-tubes of the "headers, substantially as described.

5. A water-tube boiler comprising two vertical drums placed at opposite ends of the furnace and each having a water and a steam space, horizontal headers extending laterally from the said drums and connected by longitudinal tubes, part of which form water-tubes and part form drying or superheating tubes, longitudinal tubes directly connecting the two vertical drums, combined with a furnace having grates on opposite sides of the drums,

and deflecting-surfaces arranged at different levels for respectively directing the products of combustion inwardly and outwardly with respect to the longitudinal tubes connecting the drums, substantially as described.

6. A water-tube boiler comprising two vertical drums placed at opposite ends of the furnace and each having a water and a steam space, horizontal headers extending laterally from the said drums and connected by longitudinal tubes, part of which form water-tubes and part form drying or superheating tubes, longitudinal tubes directly connecting the two vertical drums, one of said drums being provided with a transverse perforated partition having an opening therein, combined with a furnace having grates-on opposite sides of the drums, and deflecting-surfaces arranged at different levels for respectively directing the products of combustion inwardly and outwardly with respect to the longitudinal tubes connecting the drums, substantially as described.

7. A water-tube boiler comprising two ver tical drumsplaced at opposite ends of the furnace and each having a water and a steam space, horizontal headers extending laterally from the said drums and connected by longitudinal tubes, part of which form water-tubes and part form drying or superheating tubes, longitudinal tubes directly connecting the two vertical drums, combined with a furnace having grates on opposite sides of the drums, and deflecting-surfaces arranged at difierent levels for respectively directing the products of combustion inwardly and outwardly with respect to the longitudinal tubes connecting the drums; .the lower deflecting-surfaces being arranged between the headers and part of the upper deflecting-surfaces being arranged between the tubes connecting the headers while the remaining parts of said upper deflecting-surfaces extend from the headers to the connecting-tubes of the drums, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

OREL D. ORVIS.

Witnesses:

EUGENIE vP. HENDRICKSON, A. FABER DU 'FAUR, Jr. 

